Big Battery | 36kW 61.4kWh ETHOS Energy Storage System (ESS)
36kW 61.4kWh ETHOS Energy Storage System (ESS)
Maximize Efficiency and Resilience with the 36kW 61.4kWh ETHOS Energy Storage System (ESS) — BigBattery’s advanced commercial-grade power solution designed to support grid-tied energy systems in office buildings, warehouses, job sites, and other commercial environments. Engineered for safety, scalability, and performance, this system delivers reliable backup power and solar energy storage when your operation needs it most.
Commercial-Grade Power and Safety You Can Trust
The 36kW 61.4kWh ETHOS Energy Storage System (ESS) includes:
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Nine stackable 48V ETHOS battery modules totaling 61.4kWh of energy storage
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Three 12kW Lux hybrid inverters, delivering 36kW of continuous power
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Compatibility with up to 54kW of solar PV input
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Integrated UPS functionality for seamless transitions during outages
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Smart load control, peak shaving, and AC coupling to reduce utility costs
Engineered for Demanding Commercial Applications
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Modular, wall-mountable battery system for flexible installation and future expansion
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IP65-rated enclosures for harsh environments
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Built-in fire suppression system
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Advanced BMS with auto cell-balancing ensures optimal battery health
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Real-time monitoring via LED display with CANBus and RS485 protocols
Seamless Integration, Scalable Design
Whether you're looking to expand your solar infrastructure or implement a robust commercial ESS, the ETHOS system simplifies installation and operation:
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All required hardware for wall-mount installation is included
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Connect up to 16 battery modules per control box
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Easily integrates with existing solar or electrical systems
Maximize ROI with Clean, Reliable Energy
By adopting the 36kW 61.4kWh ETHOS Energy Storage System (ESS), your business can:
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Reduce peak energy demand charges
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Minimize downtime with guaranteed backup
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Take advantage of net metering programs
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Qualify for federal and state tax incentives
Why Choose the 36kW 61.4kWh ETHOS ESS?
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Commercially certified energy storage solution
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Built for performance, protection, and longevity
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Supports large solar arrays and high-load applications
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Modular and expandable as your power needs grow
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Backed by BigBattery’s support and fast shipping
Elevate your energy strategy with the 36kW 61.4kWh ETHOS Energy Storage System (ESS) — the scalable, smart, and sustainable commercial power solution your business can depend on.
What's Included
12 × 48V ETHOS 5.12kWh Stackable Battery Module
3 × ETHOS Control Box
3 × ETHOS RACK BASE
3 × LUXPower 12kW Hybrid Inverter
1 × Parallel Busbar
6 × Ethos Parallel Power Cable 4.9 ft (1500mm)
3 × Ethos Parallel Comm Cable 4.9 ft (150cm)
Specs and Downloads
Single Stack Tech Specs
| SKU: | K0967 |
| GTIN-12 (U.P.C.): | 850061252012 |
| System Voltage: | 48V |
| Nominal Voltage: | 51.2V |
| Chemistry: | LiFePO4 |
| kWh Capacity: | 10.24kWh |
| Ah Capacity: | 200Ah |
| Charging Voltage Range: | 55.6 - 57V |
| Max Charge Voltage: | 57V |
| Operating Voltage Range: | 48 – 57V |
| Suggested Low Voltage Cutoff: | 48 – 50.8V |
| BMS Cutoff Range: | 42 - 47V |
| Cell Configuration: | 16S 2P |
| Max Continuous Discharge Current: | 250A |
| Max Continuous Power: | 12800W |
| Max Discharge Peak Current: | 300A (Max 5 seconds) |
| Max Charge Current: | 200A |
| Charge Temperature Range: | 32°F - 113°F (0°C - 45°C) |
| Discharge Temperature Range: | -4°F - 140°F (-20°C - 60°C) |
| Optimal Discharge Temperature Range: | 59°F - 95°F (15°C - 35°C) |
| Storage Temperature Range (SoC >50%): | -4°F - 113°F (-20°C - 45°C) (Max 6 months) |
| Weight: | 273 lb (123.8 kg) |
| Depth: | 6.7 in (170 mm) |
| Width: | 26.5 in (674 mm) |
| Height: | 43.3 in (1100 mm) |
| Max Connections: | Up to (16) parallel connections per control box |
| Protection Rating: | IP65 / NEMA 4X |
| Communications: | CANBus / RS485 |
| Certifications: | UL9540, UL9540A, UL1973, & UN38.3 |
Are Solar Guys Pro Authorized Retailers?
Yes! We are proud to be one of the few online retailers who are authorized retailers for every single product we carry!
Being an authorized retailer means we carry the same warranty as the manufacturer, protecting your purchase!
When Will My Order Ship?
Most orders ship within 1–3 business days. You’ll get a tracking number as soon as it ships via email!
Do We Accept Returns?
Yes absolutely, we have a no-hassle, 30-day return policy on all items! To refer to the full policy, click HERE
Are Products Brand New?
Yes! By default, all products on Solar Guys Pro are 100% brand-new and in perfect condition.
If an item is used or refurbished, it will clearly indicate so in the title of the product as well as the discription.
For example, a used Battery will say:
XYZ Battery | 48V 100AH (REFURBISHED)
If you'd like to confirm, you can always send us a email at info@solarguyspro.com
Orders over $500 include a FREE (Normally $149.99) 80-Page DIY Solar eBook — added automatically at checkout.
Frequently Asked Questions
Get your 30% Tax Solar Credit!
Unlock substantial savings with the government's Solar Tax Credit, which offers a robust 30% deduction on the installation costs of solar systems. This attractive incentive is your ticket to leveraging solar energy's eco-friendly potential while enjoying the financial benefits.
At Solar Guys Pro, our commitment is to you. Please be reminded that our expertise does not extend to tax advice. Nonetheless, our dedicated staff is eager to guide you through the process and ensure you capitalize on this exceptional offer.
Contact us now to learn more!